Doesn't sound like they're expecting a ton of snow from this system (2-4cm overnight at Brandon), but the wind warning does mention blowing snow and reduced visibility with what will fall.
Hope you're able to get some first-hand accounts. You might've already seen this, but the camera at Kirkella albeit not the clearest image shows what looks like just a light dusting of snow so far on the ground though not sure if more than that is falling but melting on contact?
http://www.manitoba511.ca/en/cameras/kirkella.html#3
Unfortunately 3 of the 8 cameras that the province setup are down and a fourth has a really blurry image... hopefully they have them fixed soon, I think a lot of folks rely on them at this time of the year!